Starts and Sits - All Starting Pitcher Matchups for Fantasy Baseball (March 31 - April 6)

April 5, 2025

Nick's fantasy baseball starts/sits, expert advice for all starting pitcher matchups for March 31 - April 6 (2025). Set your winning fantasy baseball lineups.

Let's keep the opening ceremonies rolling as we hit the first full week of the MLB season with our starting pitcher starts/sits for fantasy baseball Week 1 -- Monday, March 31 through Sunday, April 6. There are still a few arms yet to debut, and you know we're excited to see what they can do! Bookmark us for every start/sit option and possible two-start decisions for your rosters.

For 13 years running, we have been writing this Starting Pitcher Starts and Sits series weekly here at RotoBaller. I'm Nick Mariano, and I'll lead you through the 2025 season. All kinds of firepower go into supplying this piece each week to produce a beloved series for our readers.

New readers should absorb the section below to learn the column's goal and how best to use it. We wish you the best of luck with your fantasy baseball starting pitcher lineup decisions to start the season right. Let's start April on a high note!

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Start/Sit Data Overview

Ahead of each week of the fantasy baseball season, we publish the table below. We have the probable starters for every game of the week and a grade for them on a 0-100 scale. The intent is to give you advice and inspire confidence (or lack thereof) in your decisions to start or sit certain pitchers.

Please note that beyond the usual "Start" and "Sit" labels, there is a third category called "context-dependent." This is because different leagues call for different actions, and those in start-sit purgatory may be worth the gamble to some.

Also, we put the arms best projected to start or get bulk innings or actionable arms who may return from the injured list or be called up. Still, some situations are fluid, and we update ASAP to reflect accurate information. The early season comes with perceived rotation plans, but we know things can change quickly and often, so check back frequently!

The "starts" category includes pitchers you'd likely start in every league. The "sits" are pitchers you likely sit in every league.

The "context-dependent" means it is close, and it's up to you to decide based on your league settings or team needs (wins, strikeouts, etc.), how deep your league is, which roto/points categories are scored, and so on.

Here are your starts and sits for what we're still calling Week 1 of the fantasy season (continuing the short half-week opener), which covers March 31 through April 6. Let's get to it!

Week 1 Start/Sit Recommendations (March 31 - April 6)

Updated start/sit recommendations for this week's MLB games. This chart is updated daily as probable starters are constantly changing with postponements, injuries, etc. Scroll down further for a color-coded chart. If you can't see the chart below, click here to see the starts/sits on a separate page:

Start/Sit Color-Coded Matchups Chart (March 31 - April 6)

The below grid shows the same data but as a color-coded grid:

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